#include "../apue.h"

static void sig_usr(int);

int main(void)
{
    if (signal(SIGUSR1, sig_usr) == SIG_ERR)
        err_sys("can't catch SIGUSR1");

    if (signal(SIGUSR2, sig_usr))
        err_sys("can't catch SIGUSR2");

    for( ; ; )
        pause();

}

static void sig_usr(int signo)
{
    if (signo == SIGUSR1)
        printf("received SIGUSR1\n");

    else if (signo == SIGUSR2)
        printf("received SIGUSR2\n");

    else
        err_dump("received signal %d\n", signo);
}
